If this hypothesis were true then a spy agency may want to rewrite responses. Every tool in an agent's harness becomes an remote procedure call you can make on that machine. Including a tool to execute a shell command, in many. A harness is completely isometric to a backdoor, it's the same code written with a different intention.

There's a million ways a bad configuration can take down a network. Especially if the part that gets squirrley is a black box.

Even if it isn't precisely this, the fact that no one is saying anything is quite surprising.

Edit: I don't want do contribute to FUD, so want to call out this comment and its replies that identify the shared layer as probably being xAI's infra: https://news.ycombinator.com/item?id=49568622